The Archipelago of the Azores (UK /əˈzɔrz/ ə-zorz, US /ˈeɪzɔrz/ ay-zorz; Portuguese: Açores, IPA: [ɐˈsoɾɨʃ]) is composed of nine volcanic islands situated in the middle of the North Atlantic Ocean, and is located about 1,500 km (930 mi) west from Lisbon and about 3,900 km (2,400 mi) east from the east coast of North America. The islands, and their economic exclusion zone, form the Autonomous Region of the Azores, one of the two autonomous regions of Portugal. Its main industries are: agriculture, dairy farming (for cheese and butter products primarily), minor livestock ranching, fishing and tourism, which is becoming the major service activity in the region; added to which, the government of the Azores employs a large percentage of the population directly or indirectly in many aspects of the service and tertiary sectors.